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An Educated Guess - Predicting Turbomachinery Efficiencies of Aero Engines During Conceptual Design

Häßy, Jannik and Bolemant, Martin and Richard-Gregor, Becker (2023) An Educated Guess - Predicting Turbomachinery Efficiencies of Aero Engines During Conceptual Design. In: ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023. ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, 2023-06-26 - 2023-06-30, Boston, Massachusetts, USA. doi: 10.1115/GT2023-103638.

Full text not available from this repository.

Abstract

Evolutionary advancements and disruptive concepts for future gas turbine-based propulsion systems are researched to reduce the environmental impact of aviation. In the initial design phase, only few data on component efficiencies is available and assumptions have to be introduced. However, comparability and consistency between assumed efficiencies is crucial to benchmark different designs or concepts in a feasible way and to avoid misleading findings. The assumptions made have to reflect the impact of design parameters on efficiency considering underlying physical phenomena. A simple model is developed to predict the design efficiencies of axial flow turbo components of aero engines with the aim to generate traceable, consistent and comparable assumptions for conceptual engine design. The efficiency prediction model combines existing approaches from published sources using a superposition principle and is calibrated by means of available data on engines with an entry into service later than 2010. For a stage-wise evaluation approach, the calibrated model predicts the component efficiencies of database engines with a maximum absolute deviation of 0.1 % for fans, 2.2 % for compressors, 1.4 % for cooled turbines and 0.6 % for low-pressure turbines. The deviations between predictions and database values create a sense for the uncertainty that has to be expected using the calibrated model. The future application of the predictive capability contributes to feasible comparisons between different engine configurations during the conceptual design phase.

Item URL in elib:https://elib.dlr.de/198821/
Document Type:Conference or Workshop Item (Speech)
Title:An Educated Guess - Predicting Turbomachinery Efficiencies of Aero Engines During Conceptual Design
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Häßy, JannikUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bolemant, MartinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Richard-Gregor, BeckerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:28 September 2023
Journal or Publication Title:ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
DOI:10.1115/GT2023-103638
Status:Published
Keywords:Aero Engine, Propulsion, Turbomachinery, Efficiency, Conceptual Design
Event Title:ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition
Event Location:Boston, Massachusetts, USA
Event Type:international Conference
Event Start Date:26 June 2023
Event End Date:30 June 2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Clean Propulsion
DLR - Research area:Aeronautics
DLR - Program:L CP - Clean Propulsion
DLR - Research theme (Project):L - Future Engines and Engine Integration, L - Virtual Engine
Location: Köln-Porz
Institutes and Institutions:Institute of Propulsion Technology > Engine
Deposited By: Häßy, Jannik
Deposited On:29 Dec 2023 14:46
Last Modified:24 Apr 2024 20:59

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